Sthree Chemicals Electrical Maintenance Engineer Interview Questions and Answers

Q1. Basic electrical engineering
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Q2. Switch gear &protection
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Q1. Project automatic door opening using IR sensor
Ans. 
An automatic door opening project using IR sensor.
• IR sensor detects motion and sends signal to microcontroller

• Microcontroller activates motor to open door

• Door closes after a set time or when sensor detects no motion

• Can be used in public places, hospitals, and homes
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Q1. Current (I) =voltage (V)/Resistance (R)
Ans. 
Ohm's Law states that current is equal to voltage divided by resistance.
• Ohm's Law is a fundamental principle in electrical engineering

• Current (I) is measured in Amperes (A)

• Voltage (V) is measured in Volts (V)

• Resistance (R) is measured in Ohms (Ω)

• The formula I = V/R can be used to calculate current in a circuit
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Q2. What it ohm's law
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Ohm's law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points.
• Ohm's law is represented by the equation V = IR, where V is voltage, I is current, and R is resistance.

• It is named after German physicist Georg Simon Ohm.

• Ohm's law is fundamental in the field of electrical engineering and is used to analyze and design electrical circuits.

• It help...read more
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Q3. SI unit of flux
Ans. 
Weber (Wb)
• The SI unit of flux is Weber (Wb)

• Flux is a measure of the flow of a physical quantity through a surface

• It is commonly used in electromagnetism and is defined as the amount of magnetic field passing through a surface
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Q4. Difference between AC and DC
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AC stands for alternating current, which changes direction periodically, while DC stands for direct current, which flows in one direction.
• AC changes direction periodically, while DC flows in one direction constantly.

• AC is used in household appliances and power distribution, while DC is used in batteries and electronic devices.

• AC can be easily converted to different voltage levels using transformers, while DC requires m...read more
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Q5. How will you calculate current carrying in a conductor ?
Ans. 
Current carrying in a conductor can be calculated using Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R).
• Use Ohm's Law: I = V / R

• Determine the voltage across the conductor

• Find the resistance of the conductor

• Calculate the current flowing through the conductor using the formula
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Q1. Tell me about yourself.
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I'm Ramesh L working on cognizant technology solutions Pvt Ltd in electrical engineering

Q1. Share details of your previous job.
Ans. 
I am Shri ram singh form allahabad uttar pradesh 
I am complited Diploma in electrical engineering fresher about quelifection 10+2
Job tellyi electrical mintenese  
Answered by SHRI RAM SINGH
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Q2. Why should we hire you?
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Q3. What are your strengths and weaknesses?
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Q4. Tell me about yourself.
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Q1. What is circuit, how work switch
Ans. 
A circuit is a closed loop of conductive material that allows electricity to flow. A switch is a device that controls the flow of electricity in a circuit.
• A circuit is made up of a power source, conductive material, and a load.

• Electricity flows from the power source through the conductive material and into the load.

• A switch is used to open or close the circuit, controlling the flow of electricity.

• Switches can be manual...read more
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Q2. And about electrical safety
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Q3. What type of source of electrical energy ,what is MCB and why use MCB ,and process of electrical energy generation to consumers
Ans. 
MCB is a type of source of electrical energy used for protection against overload and short circuit.
• MCB stands for Miniature Circuit Breaker.

• It is a device that automatically switches off the electrical circuit during abnormal conditions such as overload or short circuit.

• MCBs are commonly used in residential, commercial, and industrial electrical installations.

• They provide protection to electrical equipment and prevent...read more
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